US2458975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rib reinforcing means for propeller blades
Assignee: Curtiss Wright Corp
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Filing: 1943-12-09
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Granted: 1949-01-11
•
Expires: 1963-12-09
Abstract
No abstract record available.
Inventors
- 👤 George W Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:09
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/16; B64C11/20; B64C11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1488894A
Cited
GB215130A
Cited
GB215156A
Cited
US1635840A
Cited
US1843206A
Cited
US1999136A
Cited
US2231888A
Cited
US2170865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |